Pith Number

pith:O2VG73CO

pith:2015:O2VG73CO3L6XENQJJJCONDHELK

not attested not anchored not stored refs pending

Rank two aCM bundles on the del Pezzo fourfold of degree $6$ and its general hyperplane section

Daniele Faenzi, Francesco Malaspina, Gianfranco Casnati

arxiv:1503.02796 v1 · 2015-03-10 · math.AG · math.AC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O2VG73CO3L6XENQJJJCONDHELK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:25:13.073858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76aa6fec4edafd7236094a44e68ce45ab8ce5196c4dcab5d11dd0d7a009e5c7b

Aliases

arxiv: 1503.02796 · arxiv_version: 1503.02796v1 · doi: 10.48550/arxiv.1503.02796 · pith_short_12: O2VG73CO3L6X · pith_short_16: O2VG73CO3L6XENQJ · pith_short_8: O2VG73CO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/O2VG73CO3L6XENQJJJCONDHELK \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 76aa6fec4edafd7236094a44e68ce45ab8ce5196c4dcab5d11dd0d7a009e5c7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7b5d39f814f8d6db1c8653350491aa5b05c63d52b613b9170cc67c8d115f4e5",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-03-10T07:37:34Z",
    "title_canon_sha256": "9c1ceb0abccd6d5844882d6c2b29e6bc1c74ee596b8959ca1574524fad03b869"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02796",
    "kind": "arxiv",
    "version": 1
  }
}